Bolt-operating mechanism for locks and latches



W. E: WREAD July 9, 1929.

BOLT OPERATING MECHANTSM FOR LOCKS AND LATCHES F iled Sept. 1926 INVENTOR 4 WILLIAM EWREAD azfig,

Patented July 9, 1929.

UNITED STATES PATENT OFFICE.

WILLIAM E. WBEAD, OF LOS ANGELES, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGN- HINTS, TO HcKINNE-Y MANUFACTURING COMPANY, OF PITTSBURGH, PENNSYL- VANIA, A CORPORATION OI PENNSYLVANIA.

BOLT-OPERATING MECHANISM FOR LOCKS AND LATGHEB.

Application filed September 4, 1926., Serial 1T0. 183,628.

This invention relates more particularly to an assembly for mounting and operating .locks and latches in the door or other closure that is to be secured thereby.

An object of the invention is to provide a bolt operating mechanism which is easy to make and assemble, and which is smooth in operation, and cannot be caused to rattle when installed ;'which is free from any 'likeli- I hood of getting out of order, and which is easily installed in its closure and 1s easily connected with the handles or knobs by which it may be turned. a

Another object is to' provide an assembly of this character which can be easily accommodated to the installation of various forms of latching and locking devices.

This invention comprises a housing, a bolt carrier slidably and non-rotatably mounted in said housing and provided with a bolt receiving extension reciprocating through the housing; and a spring'to 'project sald bolt receiving extension outwardly from the housing. And I provide the bolt carrler wlth'a bore extending through the extension and threaded to receive a threaded stem on which the bolt is mounted, and I also provide a pin fixed to the housing and extending into the inner end of the here so that the bolt carrier is guided b contact with the in and also with the wal s of the opening t rou h' which it extends from the chamber of t e housing. l

I also provide means i or operating the bolt carrier to retract the bolt carrying extension against the pressure of the spring.-

Said bolt carrier is also provided with a boss around its bore to receive and center the spring.

Other objects are cheapness and simplicity of construction and ease of installation and operation.

This bolt 0 rating mechanism maybe applied in any orm of case or housing suitable therefor and the bolt olperated therebymay be a latch bolt or a loc bolt and may beef any desired form, and said bolt may be guided by any form of ide, and the bolt operating mechanism whic constitutes this present invention may be 0 rated either by a key or by a door knob or 0t er form of handle.

It will be sufiicient for the present invention to illustrate the mechanism as the same In the device illustrated herein the mechanism will be shown in the s ecific form of housing which is described an claimed in my copendlng ap lication for Letters-Patent of the United tates, Serial Number 133,630, filed on the 4th day of September, 1926;

For convenience of illustration the mechanism will be shown arranged to operate a latch bolt operable through a bolt guide which forms the subject matter of my copendin application Serial Number 133,629, file on the 4th day of September, 1926.

Other objects, advantages and features of lnvention may appearfrom the accompanying drawing, the subjoined detailed description and the-appended claims.

The accompanying drawing illustrates the Invention.

Figure 1 is a side elevation of an assembly in which the bolt operating mechanism is mounted inside a housing of the character referred to.

Fig. 2'is an elevation of that end of the said assembly having the detachable end P1608. r

Fig. 3is a sectional elevation online indicated at 0:, Figs. 2 and 4 mounted in a door 4 closure, a fragment of which is shown.

Fig. 4 is a view partly in section on line :0, Figs. 3 and 5.

Fig. 5 is a horizontal section on line 0:, Fig. 3 of the device mounted with a bolt in a door, a fragment of which is shown.

Fig. 6 is a perspective view of the bolt carrier.

The bolt cariier comprises a tappet 1 and a straight bolt carrying extension 2 integral therewith, and is provided with a bore 3 extending through-said extension and havin gra screw threaded socket 4 at its outer end.

he carrier is mounted with its tapipet inside a housing formed of a shell 5 an a detachable end iece 5', and said housing has hubs provide with journal bearings 6, 6' at through a portion of the shell wall that is thickened to provide an extended bearing for the bolt-carrying extension. It will be.

observed that the thickened wall is protruded both inwardly and outwardly of the housing,

the outward thickening or protuberance conforming substantially to the orifice through which the bolt reciprocates. Since the tappet 1 slides upon the pin 8 and may be alternately operated by the cams 13 and 13' which exert pressure near the edge of the tappet, and there would be a tendency to throw the bolt carrying extension out of line, it is desirable that there be provided an extended bearing in the wall of the housing. With-the bolt.- carrier supported at its inner end on the pin 8 and at its outer end in thethickened wall, its

movements will always be. in straight line,

" of the shell outwardly into a hole 10 in the shell directly opposite to the orifice 7, and is riveted in place, k I

' 11, 11 indicate spindles journaled in the bearings 6 and 6 and provided inside the housing with heads 12, 12' respectively carrying cams 13, 13' adapted to act independently on the tappet 2 to retract the bolt carrier. against the pressure of a spring 14-, which is shown as a spiral spring surrounding the guide pin 8 and normally holding the bolt carrier in bolt extending position to project through the bolt guide 15, a bolt 16 having a threaded stem or shank 17 screwed into the threaded socket 4:.

The housing may be of any suitable construction and is shown as constructed of a shell 5, havinga threaded open end and a threaded detachable end piece 5 screwed into said shell; said end piece being provided with the journal bearingfi' for the hub 11'.

In assembling the mechanism, one of the heads 12 with its cam 13 adjacent the side of thechamber through which the orifice 7 extends, will be inserted into the shell, and its spindle thrust through the journal bearing 6; the guide pin 8 will be inserted into the tubular body 1 with its reduced end 9 at the rear; the spring 14 will be mounted on the pin and compressed so that the bolt carrier with pin and spring can be inserted into the shell, and the tubular extension 1 thrust from the inside outward through the orifice 7, and then the reduced end 9 of the pin isinserted into the hole 10 therefor, and riveted in lace. Then the other head 12 will be inserts into e for the bolt carnvaaeee the spindle 1 1 and screwed into place in the open end ofthe shell.

' When the parts are thus assembled and the ,boltshank 1'? is screwed into the seat a therefor, rotation of either of thespindles 11, 11'

will cause the tappet for such spindle to re 'tract 'thebolt carrier against the spring,

which when released, immediately returns the bolt.

The heads of the spindlesare shown as fiat disks connecting the cams to their respective spindles and said cams are arcuate and each has its ends normally in'contact with the tappet on the face thereof adjacent to the orifice and at the opposite edges of such face, and are shown rounded so as to have. a measurably rolling contact with the tappet so as to insure smooth action.

4 I claim 1 In 'a fixture of the class described, a housing having a portion of its wall thickened and a lateral orifice through said thickened portion, whereby an extended bearing surface is provided; a bolt carrier comprising a tappet and a bolt carrying extensiciuthe outer end of which extension is supported by said extended bearing surface'and operable through the lateral orifice, a pin inside of said housing by which the inner end of the bolt carrier is supported and on which it'rcciproeates, a spring tending to project the bolt carrier through the orifice, and means acting on said tappet to retract said bolt carr1er.-

j 2. In a fixture of the class described, a housing having a portion of its wall thickened and a lateral orifice through said thickened portion whereby an extended bearing surface is provided; a bolt carrier comprising a tappet and avbolt carrying extension, the outer end of which extension is supported by said extended bearing surface and operable through the lateral orifice, a pin inside of said housing by which the inner end of the bolt carrier is supported and on which it reciprocates, a. spring tending to project the bolt carrierthrough the orifice, and means acting on said tappet at one side of the longitudinal center of the bolt carrier to retract the carrier.

In testimony whereof, I have-hereunto set my hand at Los Angeles, California, this 1st day of July, 1926.

VVILLIAM'E. WREAD. 

